Paper 2018/379

Post-Quantum One-Time Linkable Ring Signature and Application to Ring Confidential Transactions in Blockchain (Lattice RingCT v1.0)

Wilson Alberto Torres, Ron Steinfeld, Amin Sakzad, Joseph K. Liu, Veronika Kuchta, Nandita Bhattacharjee, Man Ho Au, and Jacob Cheng

Abstract

In this paper, we construct a Lattice-based one-time Linkable Ring Signature (L2RS) scheme, which enables the public to verify if two or more signatures were generated by same signatory, whilst still preserving the anonymity of the signatory. The L2RS provides unconditional anonymity and security guarantees under the Ring Short Integer Solution (Ring-SIS) lattice hardness assumption. The proposed L2RS scheme is extended to be applied in a protocol that we called Lattice Ring Condential transaction (Lattice RingCT) RingCT v1.0, which forms the foundation of the privacy-preserving protocol in any post-quantum secure cryptocurrency such as Hcash.

Metadata
Available format(s)
PDF
Category
Applications
Publication info
Published elsewhere. Minor revision.ACISP-2018
Keywords
Linkable Ring SignatureLattice-Based CryptographyPost-Quantum CryptographyCryptocurrencies
Contact author(s)
wil_alberto @ hotmail com
History
2018-11-10: revised
2018-04-30: received
See all versions
Short URL
https://ia.cr/2018/379
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2018/379,
      author = {Wilson Alberto Torres and Ron Steinfeld and Amin Sakzad and Joseph K.  Liu and Veronika Kuchta and Nandita Bhattacharjee and Man Ho Au and Jacob Cheng},
      title = {Post-Quantum One-Time Linkable Ring Signature and Application to Ring Confidential Transactions in Blockchain (Lattice RingCT v1.0)},
      howpublished = {Cryptology ePrint Archive, Paper 2018/379},
      year = {2018},
      note = {\url{https://eprint.iacr.org/2018/379}},
      url = {https://eprint.iacr.org/2018/379}
}
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